In this paper we introduce a“high pressure irrigation and suction system”designed for acute stage surgery of ruptured intracranial aneurysms, and the new operative method using this equipment. The mechanism and the structure of this system are omitted here, but in use it can be handled in the same manner as a sucker, and clots in the subarachnoid space can be washed immediately.
Until now“dry field”and“blunt dissection”have been the routine in neurosurgery and general surgery. But a completely dry field raquires“sharp dissection”without any damage to vessels. Recent developements of microscopes and microsurgical instruments seem to bring“sharp dissection”into chronic stage operations. But, in acute stage operations this is not easy because of subarachnoid clots adhering to vessels and the arachnoid trabeculae. Complete“sharp dissection”can be accomplished with this irrigation and suction system, not only in chronic stage operations but also in acute stage operations.
